Many Republicans are breathing a massive sigh of relief now that billionaire Elon Musk has unofficially broken up with president Donald Trump in dramatic fashion. As Axios reports, lawmakers are releasing plenty of steam and pent-up frustration. "He's a complete joke," one House Republican told Axios. "He had no idea what the fuck he was doing, whatsoever." "Nobody really wanted him here," the lawmaker added. "We couldn't wait to get rid of him." The comments highlight an immense build up of tension behind the scenes as Musk led the gutting of federal agencies with the newly-created Department of Government Efficiency. […]